RS232 Serial ExpressCard (1-Port) - Best compatibility - based on Prolific chipset

The RS232 ExpressCard would let you add an RS232 serial port to your laptop or ExpressCard-equipped desktop computer.

This RS232 ExpressCard is compact in size and has low power requirements to support major serial portable devices. It is down compatible to 16C950 UART. It is equipped with a 128-byte deep data FIFO and auto-flow control features to speed up the data transfer to 921.6Kbps without the under-run and over-run problems.